Configuring Guard Interval for HE
Longer guard intervals improve link reliability for longer range outdoor deployments and this features like guard interval supports URWB stacks.
To configure a guard interval, use the following CLI commands.
Device# configure dot11Radio [interface] guard-interval [gi]
gi will be one of the following values
1600 - Configure 1600 ns guard intervasl (only in HE mode)
3200 - Configure 3200 ns guard interval (only in HE mode)
400 - Configure 400 ns guard interval (supported in HT and VHT modes)
800 - Configure 800 ns guard interval (default guard interval mode and disabled mode in HT, VHT, HE)
Example:
Device# configure dot11Radio 1 high-efficiency enable
Device# configure dot11Radio 1 guard-interval 1600
Device# configure dot11Radio 1 guard-interval 3200
Device# wr
Device# show dot11Radio 1 config
Maximum tx mcs: 9
High-efficiency : enabled
Maximum tx nss : 2
RTS protection : disabled
guard-interval : 1600 ns
Device# show dot11Radio 2 config
Maximum tx mcs: 9
High-efficiency : enabled
Maximum tx nss : 2
RTS protection : disabled
guard-interval : 3200 ns